#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  lcd.begin(16, 2);
}

void loop() {
  HelloFriend();
  lcd.clear();
  delay(500);
}

void HelloFriend() {
  lcd.print("Hello"); lcd.print(" ");
  delay(400);
  lcd.println("Friend!:D");
  delay(800);
}